Little Pieces Virus

 Virus Name:  Little Pieces 
 Aliases:     1374, Pieces 
 V Status:    Rare 
 Discovered:  January, 1991 
 Symptoms:    .COM & .EXE growth; decrease in available free memory; 
              message; system hangs; unexpected screen clears 
 Origin:      Italy 
 Eff Length:  1,374 Bytes 
 Type Code:   PRaE - Parasitic Resident .EXE Infector 
 Detection Method:  ViruScan, F-Prot, Sweep, AVTK, IBMAV, NAV, 
                    NAVDX, VAlert, PCScan, ChAV, 
                    NShld, LProt, Sweep/N, Innoc, NProt, AVTK/N, 
                    NAV/N, IBMAV/N 
 Removal Instructions:  Delete infected programs 
 General Comments: 
       The Little Pieces virus was isolated in January, 1991, in Italy. 
       This virus is a 1,374 byte memory resident infector of .EXE files. 
       The first time a program infected with Little Pieces is executed, 
       the virus will install itself memory resident.  The area where it 
       is memory resident is 1,392 bytes long and labeled COMMAND Data in 
       low system memory.  Some memory mapping utilities will combine this 
       area with the command interpreter, so the command interpreter will 
       appear to be 1,392 bytes longer than expected.  Interrupts 13, 16, 
       and 21 are hooked by the Little Pieces virus. 
       Once Little Pieces is memory resident, it will infect .EXE programs 
       as they are executed.  Infected .EXE programs will increase in size 
       by 1,374 bytes and have the virus located at the end of the 
       infected file.  Infected files will not have their date and time in 
       the disk directory altered. 
       Systems infected with the Little Pieces virus may experience the 
       system display being cleared unexpectedly after a key is pressed on 
       the keyboard.  The following message is usually displayed after the 
       screen is cleared, though not always: 
            "One of these days I'm going to cut you into little pieces" 
       This message cannot be viewed in infected files as it is encrypted 
       within the virus. 
       Infected system may also experience unexpected system hangs 
       occurring, requiring the system to be rebooted.  These hangs 
       sometimes occur after the above message is displayed. 

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